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I am conducting a study based on data base from OJS 2.4.2 and the first phase of this study found that once the software is installed, the database consists of a total of 114 entities (tables) of which begin with the following records:

It is noteworthy that entities 1, 2, and 3 (controlled_vocabs, controlled_vocab_entries and controlled_vocab_entry_settings) may be being used to implement the Controlled Vocab (provides a way to organize information for later retrieval), But I am not sure that are implemented to achieve this purpose. Thank help me clear my doubts about these three entities.

This holds all the plugin configuration in the system. For most plugins, it describes whether the plugin is enabled or not (setting_name='enabled'); for sidebar blocks, whether the plugin appears on the right or left sidebar (setting_name='context') and how high up on the page it is (setting_name='seq'); other plugins have other settings, depending on what they implement. The journal_id column indicates which journal the setting applies to, with journal_id=0 indicating site-wide (i.e. the page listing all journals).

I am currently analyzing the entity versions, I noticed that it contains the information of the installed plugins for metadata, blocks and citation formats. I would like you to talk a little more about this entity.